package com.welfare.common.utils;

import com.welfare.common.exception.BusinessException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import com.welfare.common.constant.HttpStatus;
import com.welfare.common.core.domain.model.LoginUser;
import com.welfare.common.exception.ServiceException;
import org.springframework.util.CollectionUtils;

import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

/**
 * 安全服务工具类
 *
 * @author welfare
 */
public class SecurityUtils {
    /**
     * 用户ID
     **/
    public static Long getUserId() {
        try {
            return getLoginUser().getUserId();
        } catch (Exception e) {
            throw new ServiceException("获取用户ID异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取部门ID
     **/
    public static Long getDeptId() {
        try {
            return getLoginUser().getDeptId();
        } catch (Exception e) {
            throw new ServiceException("获取部门ID异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取用户账户
     **/
    public static String getUsername() {
        try {
            return getLoginUser().getUsername();
        } catch (Exception e) {
            throw new ServiceException("获取用户账户异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取用户
     **/
    public static LoginUser getLoginUser() {
        try {
            return (LoginUser) getAuthentication().getPrincipal();
        } catch (Exception e) {
            throw new ServiceException("获取用户信息异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取用户管理企业id列表
     *
     * @return
     */
    public static List<Integer> getUserFids() {
        try {
            LoginUser loginUser = (LoginUser) getAuthentication().getPrincipal();
            return loginUser.getUserFids();
        } catch (Exception e) {
            throw new ServiceException("获取用户管理企业id异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 校验该用户是否有fids企业的数据权限
     *
     * @param fids
     */
    public static void verifyHaveFidsPermission(List<Integer> fids) {
        List<Integer> userFids = getUserFids();
        if (CollectionUtils.isEmpty(fids)) {
            return;
        }
        fids.stream().forEach(fid -> {
            if (!userFids.contains(fid)) {
                throw new BusinessException("该用户没有企业id=" + fid + "的权限", HttpStatus.UNAUTHORIZED);
            }
        });

    }

    /**
     * 校验该用户是否有fid企业的数据权限
     *
     * @param fid
     */
    public static void verifyHaveFidPermission(Integer fid) {
        List<Integer> fids = new ArrayList<>(1);
        if (Objects.isNull(fid)) {
            return;
        }
        fids.add(fid);
        verifyHaveFidsPermission(fids);
    }

    /**
     * 获取Authentication
     */
    public static Authentication getAuthentication() {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword     真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

    /**
     * 是否为管理员
     *
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(Long userId) {
        return userId != null && 1L == userId;
    }
}
